(R)-(-)-Watanidipine hydrochloride (R)-AE0047 189624-86-0 3,5-Pyridinedicarboxylic acid, 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-, 2-(4-(4-(diphenylmethyl)-1-piperazinyl)phenyl)ethyl methyl ester, dihydrochloride, (R)-(-)- Watanidipine hydrochloride (R)-enantiomer